Hey guys and gals I want to upgrade my wheels on the MC9 to Alcoa's but what am I looking for? Do regular big truck wheels fit? are all the wheels the same? Will the Alcoa's just bolt on in place of my steel wheels or is there adapters required?

My bus currently has 22.5's but is there any reason to change to a larger wheel?

Check out these websites to see what kind you may have Stud Pilot or Hub pilot wheels then go to Alcoa and see what they suggest. Some have to use adapters or different lugs and nuts. Remember each side is different threads. Look on the end of the studs it will have a L or a R for the thread pattern. sometimes they have been put on wrong or a stud has been inserted on the wrong side.

Probably stud piloted wheels. You will have to replace the studs on the steer and tag drums and replace the inner wheel nuts on the drive. If you choose to use al wheels on the inner duals then those studs will have to be replaced.

Pretty much an all day sucker to change over. Plus I can almost, no absolutely promise, you will find at least one or two wheel bearings that have to be replaced.

So: cost of wheels - 6 at what $400-500 each cost of longer studs - 40 at $4?? each cost of new inner wheel nuts - 20 at $4 ?? each cost of new bearings and seals - ?? at $150-200 each

Trucks use 22.5 x 8.25 rims. When they go to a heavy duty 12R or the 295/80 or 315/80, then trucks use 22.5 x 9.00 rims. Unless you weigh more then 14,000lbs on the front, I'd stay with 22.5 x 8.25 rims. . Good Luck, TomC

Our MC9 came from the previous owner with 22.5 X 8.25 steel wheels. When I replaced them with aluminum I kept with the same size and they have work out great for me. About $3000.00 in the entire wheel change project.